Use of halogenated organosulfur and peroxide compounds in golf balls

Abstract

A golf ball comprising: a core comprising a polybutadiene rubber having a cis-content of greater than 90%, a crosslinking agent, and an initiator, the core having an ATTI compression of less than 20; an inner cover layer comprising ethylene, from 5 weight % to 30 weight % of an α, β-ethylenically unsaturated carboxylic acid, and from 5 weight % to 25 weight % of a softening comonomer; and a cover comprising ethylene and from 5 weight % to 35 weight % of an α, β-ethylenically unsaturated carboxylic acid; wherein 100% of the carboxylic acid groups of the inner cover layer are neutralized.

1. A golf ball comprising:
 a core comprising a polybutadiene rubber having a cis-content of greater than 90%, a crosslinking agent, and an initiator, the core having an Atti compression of less than 20; 
 an inner cover layer comprising ethylene, from 5 weight % to 30 weight % of an α,β-ethylenically unsaturated carboxylic acid, and from 5 weight % to 25 weight % of a softening comonomer; and 
 a cover comprising ethylene and from 5 weight % to 35 weight % of an α,β-ethylenically unsaturated carboxylic acid; 
 wherein 100% of the carboxylic acid groups of the inner cover layer are neutralized. 
 
     
     
       2. The golf ball of  claim 1 , wherein the core has an Atti compression of less than 10. 
     
     
       3. The golf ball of  claim 2 , wherein the core has an Atti compression of 0. 
     
     
       4. The golf ball of  claim 1 , wherein the softening comonomer comprises a C 1-8  alkyl acrylate. 
     
     
       5. The golf ball of  claim 1 , wherein the α,βethylenically unsaturated carboxylic acid is present in the inner cover layer in an amount of from 10 weight % to 20 weight %. 
     
     
       6. The golf ball of  claim 1 , wherein the softening comonomer is present in the inner cover layer in an amount of from 10 weight % to 20 weight %. 
     
     
       7. The golf ball of  claim 1 , wherein the ethylene in the inner cover layer is present in an amount of from 85 weight % to 25 weight %. 
     
     
       8. The golf ball of  claim 1 , wherein the α,β-ethylenically unsaturated carboxylic acid in the cover layer is present in an amount of from 8 weight % to 25 weight %. 
     
     
       9. The golf ball of  claim 8 , wherein the α,β-ethylenically unsaturated carboxylic acid in the cover layer is present in an amount of from 8 weight % to 20 weight %. 
     
     
       10. The golf ball of  claim 1 , wherein the cover layer is substantially free of a softening comonomer. 
     
     
       11. The golf ball of  claim 1 , wherein the ethylene in the cover layer is present in an amount of from 80 weight % to 92 weight %. 
     
     
       12. A golf ball comprising:
 a core comprising a polybutadiene rubber having a cis-content of greater than 95%, a crosslinking agent, and an initiator, the core having an Atti compression of less than 10; 
 an inner cover layer comprising ethylene, from 10 weight % to 20 weight % of an α,β-ethylenically unsaturated carboxylic acid, and from 10 weight % to 20 weight % of a alkyl acrylate; and 
 a cover comprising ethylene and from 8 weight % to 25 weight % of an α,β-ethylenically unsaturated carboxylic acid; 
 wherein 100% of the carboxylic acid groups of the inner cover layer are neutralized. 
 
     
     
       13. A golf ball comprising:
 a core comprising a polybutadiene rubber having a cis-content of greater than 95%, a crosslinking agent, and an initiator, the core having an Atti compression of 0; 
 an inner cover layer comprising ethylene, from 10 weight % to 20 weight % of an α,β-ethylenically unsaturated carboxylic acid, and from 10 weight % to 20 weight % of a C 1-8  alkyl acrylate; and 
 a cover comprising ethylene and from 8 weight % to 20 weight % of an α,β-ethylenically unsaturated carboxylic acid; 
 wherein 100% of the carboxylic acid groups of the inner cover layer are neutralized.